论文标题
带有来自Activ Star形成区域的恒星的银河旋转参数和GAIA DR2目录的数据
Galactic Rotation Parameters Based on Stars from Activ Star-Forming Regions with Data from the Gaia DR2 Catalogue
论文作者
论文摘要
我们已经研究了超过25,000个年轻恒星的样本，并从GAIA DR2目录中进行了适当的运动和三角类似物的样本。其视差的相对错误不超过10 \％。 Marton等人进行了属于活跃星形区域的恒星的选择。根据GAIA DR2目录的数据，通过调用Wise和Planck目录中的红外测量结果。低质量T Tauri恒星构成大多数样品恒星。从它们那里找到了银河旋转角速度的以下参数：$ω__0= 28.40 \ pm0.11 $ km s $ s $^{ - 1} $ kpc $^{ - 1} $，$ω^{'} _ 0 = -3.933333333333333 \ pm0.0.933 \ pm0.033 $ km s $ km s $}和$ω^{''} _ 0 = 0.804 \ pm0.040 $ km s $^{ - 1} $ kpc $^{ - 3} $。 Oort常数为$ a = 15.73 \ pm0.32 $ km s $ s $^{ - 1} $ kpc $^{ - 1} $和$ b = -12.67 \ pm0.34 $ km s $ s $ s $^{ - 1} $ kpc $^{ - 1} $ kpc $^{ - 1} $ $ v_0 = 227 \ pm4 $ km s $^{ - 1} $用于太阳的被采用的中心距离$ r_0 = 8.0 \ pm0.15 $ kpc。
We have studied a sample of more than 25 000 young stars with proper motions and trigonometric parallaxes from the Gaia DR2 catalogue. The relative errors of their parallaxes do not exceed 10\%. The selection of stars belonging to active star-forming regions was made by Marton et al. based on data from the Gaia DR2 catalogue by invoking infrared measurements from the WISE and Planck catalogues. Low-mass T Tauri stars constitute the majority of sample stars. The following parameters of the angular velocity of Galactic rotation have been found from them: $Ω_0 =28.40\pm0.11$ km s$^{-1}$ kpc$^{-1}$, $Ω^{'}_0=-3.933\pm0.033$ km s$^{-1}$ kpc$^{-2}$ and $Ω^{''}_0=0.804\pm0.040$ km s$^{-1}$ kpc$^{-3}$. The Oort constants are $A=15.73\pm0.32$ km s$^{-1}$ kpc$^{-1}$ and $B=-12.67\pm0.34$ km s$^{-1}$ kpc$^{-1}$, while the circular rotation velocity of the solar neighborhood around the Galactic center is $V_0=227\pm4$ km s$^{-1}$ for the adopted Galactocentric distance of the Sun $R_0=8.0\pm0.15$ kpc.
